feat: cleaned up some stuff

systems/saturn/config/networking.nix

@@ -0,0 +1,31 @@
+{
+  lib,
+  flake,
+  ...
+}:
+let
+  inherit (flake.config.machines.devices) saturn;
+in
+{
+  networking = {
+    hostName = saturn.name;
+    networkmanager.enable = true;
+    useDHCP = lib.mkDefault true;
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ ];
+    };
+  };
+  services = {
+    avahi = {
+      enable = true;
+      openFirewall = true;
+      nssmdns4 = true;
+    };
+    sshd.enable = true;
+    openssh = {
+      enable = true;
+      settings.PasswordAuthentication = false;
+    };
+  };
+}